| 单词 | hydrozoon | 
| 释义 | > as lemmashydrozoon   hydrozoon  n.  ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > 			[noun]		 > class Hydrozoa > member of pulmograde1841 pulmonigrade1846 hydrozoan1877 hydrozoon1877 1877    T. H. Huxley Man. Anat. Invertebrated Animals iii. 111  				The embryo sponge is..similar to the corresponding stage of a hydrozoon, and is totally unlike any known condition of a protozoon. < as lemmas | 
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